/bin/cat : argument list is too long

[Manickam Muthuraman]

Hello
when i tried the following command, i get this error. May i know whats going  
wrong.

address@hidden:~/HHpred/scop_hmm> cat *.hhm > scop70_1.72.hhm
bash: /bin/cat: Argument list too long

thanks in advance
from
manickam